APA (7e ed.) Bronvermelding

Ang, E. R., Calces, A. A. C., Roxas, A. Y., & Sangalang, S. P. A retrospective study of the Top 100 drugs in the Surgery Ward of the Philippine General Hospital for the 3rd Quarter of 1997.

Chicago (17e ed.) Bronvermelding

Ang, Enalyn R., Agnes Abigail C. Calces, Angeline Y. Roxas, en Siena P. Sangalang. A Retrospective Study of the Top 100 Drugs in the Surgery Ward of the Philippine General Hospital for the 3rd Quarter of 1997.

MLA (9e ed.) Bronvermelding

Ang, Enalyn R., et al. A Retrospective Study of the Top 100 Drugs in the Surgery Ward of the Philippine General Hospital for the 3rd Quarter of 1997.